I have this problem as well. i do have access to internet while on wifi, but no data on mobile. i noticed in the "sim card status" says my "network" is samsung. it says my mobile network state is disconnected.
So I rooted my device and now I do not have access to mobile internet. I noticed my carrier says "Samsung" and not "Sprint". I can still receive calls and texts. i have perfect internet access while on Wi-Fi. other than this I have had no problems (that I'm aware of) with the root. How can i...